Agriculture & Biology
tundra
62%
organic soils
55%
carbon radioisotopes
52%
soil organic matter
45%
nutrient availability
37%
ecosystems
36%
mineral soils
30%
degradation
29%
nutrients
29%
organic horizons
18%
soil horizons
16%
graminoids
16%
nitrogen
14%
fine roots
13%
Arctic region
12%
soil
12%
shrubs
10%
lakes
9%
vegetation
8%
phosphorus
8%
carbon
7%
Earth & Environmental Sciences
tundra
52%
organic soil
50%
nutrient availability
41%
decomposition
34%
litter
34%
organic matter
32%
nutrient
31%
ecosystem
28%
loss
19%
fine root
15%
soil
15%
nitrogen
14%
soil horizon
13%
mineral
13%
soil layer
11%
vertical distribution
11%
shrub
11%
warming
9%
phosphorus
8%
rate
7%
vegetation
7%
lake
7%
carbon
6%
material
4%
Chemical Compounds
Tundra
100%
Ecosystem
57%
Organic Matter
51%
Nutrient
51%
Soil
41%
Decomposition
20%
Mineral
13%
Nitrogen
9%
Phosphorus(.)
6%
Carbon Atom
3%